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Finding the Fourth Proportional to 621, 930.62 and 481.53

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Solution

The fourth proportional to 621, 930.62 and 481.53 is: 721.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    621 : 930.62 = 481.53 : x
  2. Step 2: Convert to fraction form
    621/930.62 = 481.53/x
  3. Step 3: Cross multiply
    621x = 930.62 × 481.53
  4. Step 4: Simplify right side
    621x = 448,119.04
  5. Step 5: Solve for x
    x = 448,119.04/621
  6. Step 6: Final answer
    x = 721.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.